Gastroenterology Practice Questions

Q: Which of the following is true regarding Hepatitis A?

Causes mild illness in children. ***Causes mild illness in children*** - Hepatitis A infection in children is typically **asymptomatic or a mild, self-limiting illness**, often mistaken for a common gastrointestinal bug [1]. - This contrasts with adults, who tend to experience more severe symptoms and a higher incidence of **jaundice** [1]. *Sexual route common* - While **fecal-oral transmission** is the primary route, sexual transmission (especially via anal-oral contact) can occur but is not considered the **most common or primary mode** of spread for Hepatitis A. - The virus is present in high concentrations in the feces of infected individuals, leading to easy spread via **contaminated food, water, or person-to-person contact**. *3% incidence of carrier state* - Hepatitis A **does not cause a chronic carrier state**; the virus is cleared from the body after the acute infection. - The concept of a carrier state is primarily associated with **Hepatitis B** and **Hepatitis C** viruses, which can establish chronic infections. *10% transform into HCC* - Hepatitis A is an **acute infection** and does not lead to **chronic liver disease or hepatocellular carcinoma (HCC)**. - **HCC** is a complication of chronic liver damage, mainly seen with chronic **Hepatitis B** and **Hepatitis C** infections.

Q: Which of the following is not used for diagnosing celiac disease?

Anti-nuclear antibody. ***Anti-nuclear antibody*** - **Anti-nuclear antibodies (ANAs)** are primarily associated with **systemic autoimmune diseases** like systemic lupus erythematosus (SLE), not celiac disease. - While a patient with celiac disease might coincidentally have a positive ANA, it is not a diagnostic marker for **celiac disease** itself. *Anti-endomysial antibody* - **Anti-endomysial antibodies (EMA)** are highly specific and sensitive for **celiac disease**, especially in IgA-sufficient individuals. - They target the same antigen as anti-tissue transglutaminase antibodies. *Anti-gliadin antibody* - **Anti-gliadin antibodies (AGA)** were historically used for celiac diagnosis but are less specific and sensitive than other serological markers. - Their use has largely been replaced by **anti-tissue transglutaminase (tTG)** and **anti-endomysial antibodies (EMA)**. *Anti-tissue transglutaminase antibody* - **Anti-tissue transglutaminase (tTG) IgA antibodies** are the **primary screening test** recommended for celiac disease due to their high sensitivity and specificity. - A positive result often leads to endoscopic biopsy for confirmation.

Q: Okuda staging contains all except

AFP. ***AFP*** - The **Okuda staging system** for hepatocellular carcinoma (HCC) uses parameters related to liver function and tumor burden, but it does **not include AFP levels**. [1] - AFP is a common **tumor marker** for HCC but is not part of the specific criteria for Okuda staging. *Tumor size* - **Tumor size greater than 50%** of the liver parenchyma is one of the four parameters used in the Okuda staging system. - This criterion is crucial for assessing the **extent of the disease**, differentiating between early and advanced cases. *Ascites* - The presence of **ascites** (related to fluid retention) is another key parameter in the Okuda staging system. - Ascites indicates **decompensated liver function**, implying a more advanced stage of disease. *Bilirubin* - **Bilirubin levels higher than 3 mg/dL** are included in the Okuda staging system. - Elevated bilirubin reflects **severe liver dysfunction**, indicating reduced hepatic synthetic capacity and usually a poorer prognosis.

Q: Which of the following is the right choice of treatment for portosystemic encephalopathy?

Lactulose. ***Lactulose*** - **Lactulose** is a non-absorbable disaccharide that is metabolized by gut bacteria, producing a laxative effect and acidifying the colon. - This acidification traps **ammonia** (a neurotoxin) in its ionized form (NH4+), preventing its absorption and facilitating its excretion in feces, thereby reducing systemic ammonia levels [1]. *Diuretics* - **Diuretics** are primarily used to manage fluid overload, ascites, and edema in liver cirrhosis, but they do not directly treat the high ammonia levels characteristic of portosystemic encephalopathy. - While they can improve some symptoms of liver disease, they are not a specific treatment for **encephalopathy**. *Emergency portosystemic shunt surgery* - **Portosystemic shunt surgery** is typically performed to decompress the portal system and reduce bleeding risk from varices, but it can worsen portosystemic encephalopathy by increasing shunting of portal blood (and toxins) into the systemic circulation [1]. - It is generally contraindicated specifically for the treatment of **encephalopathy** and is reserved for specific cases like refractory variceal bleeding. *High protein diet* - **High-protein diet** can actually precipitate or worsen portosystemic encephalopathy by increasing the production of ammonia from protein metabolism [1]. - Patients with portosystemic encephalopathy often require **protein restriction** as part of their management, though complete restriction is typically avoided to prevent malnutrition.

Q: A young girl presents with abdominal pain and a recent change in bowel habit, with passage of mucus in stool. There is no associated blood in stool and symptoms are increased with stress. The most likely diagnosis is:

Irritable bowel syndrome. ***Irritable bowel syndrome*** - **Irritable bowel syndrome (IBS)** typically presents with **abdominal pain**, altered bowel habits (constipation, diarrhea, or mixed), and **mucus in stool** without blood [1]. - The symptoms are often exacerbated by **stress** and there is no evidence of structural or biochemical abnormalities [1]. *Amebiasis* - **Amebiasis** is an infection caused by *Entamoeba histolytica*, usually leading to **bloody diarrhea** (dysentery), abdominal pain, and fever. - The absence of blood in the stool and the presence of stress-related symptom exacerbation make amebiasis less likely. *Crohn's disease* - **Crohn's disease** is a type of inflammatory bowel disease characterized by **transmural inflammation** that can affect any part of the gastrointestinal tract. - Symptoms often include **abdominal pain**, diarrhea (which can be bloody), weight loss, and fatigue, and it does not typically show a direct correlation with stress as the primary exacerbating factor. *Ulcerative Colitis* - **Ulcerative colitis (UC)** is an inflammatory bowel disease characterized by **continuous inflammation** of the colon, typically starting in the rectum. - Key symptoms include recurrent **bloody diarrhea**, abdominal pain, and tenesmus, which are not described in this case, particularly the absence of blood.

Q: The gold standard investigation for gastro-esophageal reflux disease is:

24-hour pH recording. ***24-hour pH recording*** - This is considered the **gold standard** because it directly measures the frequency and duration of **acid reflux** into the esophagus. - It correlates symptoms with reflux episodes, providing objective evidence for the diagnosis of **GERD**. *Measurement of length of lower esophageal sphincter* - While the **lower esophageal sphincter (LES)** dysfunction is central to GERD, simply measuring its length is not a diagnostic gold standard. - Reduced LES pressure or transient relaxations are more significant than static length measurement. *Esophageal manometry* - This test measures the **pressure and coordination** of esophageal muscle contractions and LES pressure. - It is primarily used to evaluate **motility disorders** and locate the LES, not as a primary diagnostic for GERD itself. *Endoscopy* - **Endoscopy** is useful for assessing complications of GERD such as esophagitis, strictures, or Barrett's esophagus, and to **rule out other pathologies**. - However, many patients with GERD symptoms have a normal endoscopic examination, making it less specific for the diagnosis of reflux itself.

Q: Best site for taking biopsy for HSV esophagitis is:

Edge of ulcer. ***Edge of ulcer*** - The **edge of the ulcer** is the preferred site for biopsy in HSV esophagitis because it is where the **actively replicating viral particles** and **cytopathic effects** are most likely to be found. - This area allows for the detection of characteristic **ground-glass nuclei**, **Cowdry type A inclusions**, and **multinucleated giant cells** indicative of HSV infection. *Base of ulcer* - While the base of the ulcer might show inflammatory changes, it is less likely to contain actively replicating virus or viable host cells exhibiting the classic **cytopathic changes** seen in HSV. - The base often consists of **necrotic debris** and granulation tissue, making a definitive diagnosis more difficult. *Adjacent indurated area around ulcer* - An indurated area around an ulcer could suggest chronic inflammation or other pathologies, but for acute HSV infection, it is less likely to yield diagnostic viral effects. - This region may show secondary inflammatory changes rather than the primary viral effects at the site of invasion. *Surrounding normal mucosa* - The normal mucosa surrounding the ulcer is unlikely to show any direct histological evidence of HSV infection. - Biopsying this area would not be diagnostic as the virus primarily affects and ulcerates the epithelial lining.

Q: Which of the following findings is characteristic of Mallory-Weiss syndrome?

Hematemesis. ***Hematemesis*** - **Hematemesis** (vomiting blood) is the hallmark symptom of Mallory-Weiss syndrome, resulting from longitudinal tears in the distal esophagus or gastric cardia [1]. - These tears are typically caused by sudden increases in **intra-abdominal pressure**, often due to forceful retching or vomiting, leading to bleeding [1]. *Melena* - **Melena** indicates bleeding from the upper gastrointestinal (GI) tract, but it signifies digested blood, resulting in black, tarry stools, and is not the primary presentation of acute Mallory-Weiss tears. - While melena can occur if the bleeding from a Mallory-Weiss tear is slow or prolonged, **frank hematemesis** is the more immediate and characteristic sign. *Epigastric pain* - **Epigastric pain** can be present in Mallory-Weiss syndrome due to the forceful vomiting and the tears themselves, but it is a non-specific symptom found in many GI conditions. - It is not as specific or diagnostically crucial as hematemesis for identifying Mallory-Weiss tears. *Vomiting* - **Vomiting** or retching is often the precipitating event that causes Mallory-Weiss tears, but it is the cause, not the characteristic finding of the syndrome itself [1]. - The key diagnostic feature is the **subsequent bleeding** (hematemesis) that results from the tears, differentiating it from simple vomiting [1].

Q: Which of the following is NOT included in the Child-Pugh criteria for assessing liver disease severity?

ALT / AST. ***ALT / AST*** - The Child-Pugh score primarily assesses the synthetic and excretory functions of the liver, not necessarily the degree of **hepatocellular inflammation** reflected by transaminases [3]. - While ALT/AST levels are crucial for diagnosing acute liver injury and monitoring chronic liver diseases, they are **not direct components** of the Child-Pugh class, which focuses on prognosis [1]. *S. albumin* - **Serum albumin** reflects the synthetic function of the liver, as albumin is exclusively produced by hepatocytes [2]. - Low albumin levels indicate significant **hepatic dysfunction**, which is directly incorporated into the Child-Pugh scoring system. *Serum Bilirubin* - **Serum bilirubin** measures the liver's ability to conjugate and excrete bilirubin, a key excretory function [2]. - Elevated bilirubin levels signify impaired liver function and are a critical parameter in the **Child-Pugh classification**. *Ascites* - The presence and severity of **ascites** are clinical signs of decompensated liver disease, reflecting portal hypertension and fluid retention [2]. - Ascites is a **clinical parameter** directly included in the Child-Pugh score, contributing to the assessment of disease severity.

Question 1

Which of the following is true regarding Hepatitis A?

Accepted Answer

Causes mild illness in children

Answer

Sexual route common

Answer

3% incidence of carrier state

Answer

10% transform into HCC

Question 2

Which of the following is not used for diagnosing celiac disease?

Accepted Answer

Anti-nuclear antibody

Answer

Anti-endomysial antibody

Answer

Anti-gliadin antibody

Answer

Anti-tissue transglutaminase antibody

Question 3

Post hepatic Portal Hypertension is caused by

Accepted Answer

Budd-Chiari syndrome

Answer

Portal vein thrombosis

Answer

Veno occlusive disease

Answer

Congenital hepatic fibrosis

Answer

Chronic hepatic venous congestion

Answer

Right heart failure

Question 4

Okuda staging contains all except

Accepted Answer

AFP

Answer

Tumor size

Answer

Ascites

Answer

Bilirubin

Question 5

Which of the following is the right choice of treatment for portosystemic encephalopathy?

Accepted Answer

Lactulose

Answer

Diuretics

Answer

Emergency portosystemic shunt surgery

Answer

High protein diet

Question 6

A young girl presents with abdominal pain and a recent change in bowel habit, with passage of mucus in stool. There is no associated blood in stool and symptoms are increased with stress. The most likely diagnosis is:

Accepted Answer

Irritable bowel syndrome

Answer

Amebiasis

Answer

Crohn's disease

Answer

Ulcerative Colitis

Question 7

The gold standard investigation for gastro-esophageal reflux disease is:

Accepted Answer

24-hour pH recording

Answer

Measurement of length of lower esophageal sphincter

Answer

Esophageal manometry

Answer

Endoscopy

Question 8

Best site for taking biopsy for HSV esophagitis is:

Accepted Answer

Edge of ulcer

Answer

Base of ulcer

Answer

Adjacent indurated area around ulcer

Answer

Surrounding normal mucosa

Question 9

Which of the following findings is characteristic of Mallory-Weiss syndrome?

Accepted Answer

Hematemesis

Answer

Melena

Answer

Epigastric pain

Answer

Vomiting

Question 10

Which of the following is NOT included in the Child-Pugh criteria for assessing liver disease severity?

Accepted Answer

ALT / AST

Answer

S. albumin

Answer

Serum Bilirubin

Answer

Ascites

Gastroenterology — MCQs

Gastroenterology — MCQs

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